Memory tooling is unavailable in new Copilot general-chat sessions

Memory tooling is unavailable in new Copilot general-chat sessions (`1.0.71-0`, Windows). Global instructions referencing saved memories load correctly, but no memory tool is registered, so memories cannot be listed or read.

This breaks persistent memory entirely: saved constraints, preferences, and prior corrections become inaccessible, making continuity and memory-backed workflows impossible.

Expected: the memory tool is registered and can read saved memories. Actual: it is absent from the session’s capabilities. Please investigate memory-tool initialization for general chat.

---
| Field | Value |
| --- | --- |
| App version | 1.0.22 |
| OS | Windows 10.0.26651 |
| Theme | GitHub |
| Path | /chat |
| Tenure | Week 3 |

Reproduce the issue in a new Copilot general-chat session using the reported app version and Windows environment, then inspect session capabilities and memory-tool initialization. Done means the memory tool is registered in general chat and can list or read saved memories.

Scritto dal modello di indicizzazione a partire dal testo della issue.